单击按钮时的JavaFX警告框

Question

我目前正在研究我的JavaFX ZOO项目,我遇到了问题.我在TableView中显示所有记录,其中一列包含删除按钮.这一切都很完美,但我想点击删除按钮后出现一个警告框,只是为了安全起见.

所以我的删除按钮类看起来像这样:

    private class ButtonCell extends TableCell<Record, Boolean> {
    final Button cellButton = new Button("Delete");

    ButtonCell(){

        cellButton.setOnAction(new EventHandler<ActionEvent>(){

            @Override
            public void handle(ActionEvent t) {

                Animal currentAnimal = (Animal) ButtonCell.this.getTableView().getItems().get(ButtonCell.this.getIndex());

                data.remove(currentAnimal);
            }
        });
    }

    @Override
    protected void updateItem(Boolean t, boolean empty) {
        super.updateItem(t, empty);
        if(!empty){
            setGraphic(cellButton);
        }
    }
}

另外,我的AlertBox类看起来像这样:

public class AlertBox {

    public static void display(String title, String message){

        Stage window = new Stage();

        window.initModality(Modality.APPLICATION_MODAL);
        window.setTitle(title);
        window.setMinWidth(250);

        Label label = new Label();
        label.setText(message);
        Button deleteButton = new Button("I'm sure, delete!");

        VBox layout = new VBox(10);
        layout.getChildren().addAll(label,deleteButton);
        layout.setAlignment(Pos.CENTER);

        Scene scene = new Scene(layout);
        window.setScene(scene);
        window.showAndWait();

    }

}

我想点击"删除"按钮后,警告框出现,请求许可,然后执行其余的删除代码.

我还考虑添加Alert而不是我的AlertBox类,fe:http://code.makery.ch/blog/javafx-dialogs-official/ (Confirmation Dialog)但我不知道如何实现它.

任何帮助都会很棒!谢谢 :)

Answer 1

我将从您提到的网站借用代码.

cellButton.setOnAction(new EventHandler<ActionEvent>(){

        @Override
        public void handle(ActionEvent t){

            Alert alert = new Alert(AlertType.CONFIRMATION);
            alert.setTitle("Confirmation Dialog");
            alert.setHeaderText("Look, a Confirmation Dialog");
            alert.setContentText("Are you ok with this?");

            Optional<ButtonType> result = alert.showAndWait();
            if (result.get() == ButtonType.OK){
                Animal currentAnimal = (Animal) ButtonCell.this.getTableView().getItems().get(ButtonCell.this.getIndex());
                data.remove(currentAnimal);
            }
        }
    });